I am sorry for this delayed reply to your gardening question. The spring rush has brought a deluge of questions and we are working hard to catch up!
There are not a lot of options that deer don't like. Copper Canyon daisy is a fall blooming perennial that they hate. Other flowers that grow in cool weather include ornamental cabbage and kale, alyssum, cyclamen, dusty miller (foliage), and snapdragons but these are not going to repel deer.
Thanks for the question. Best wishes for a wonderful gardening season. Please stop in again soon!
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